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chromium/third_party/blink/web_tests/external/wpt/html/webappapis/dynamic-markup-insertion/document-write/047-1.html 

<script>
onload = opener.t.step_func_done(function() {
    document.write("<body>Filler Text<div id='log'></div>");
    opener.assert_equals(document.body.textContent, "Filler Text");
});
</script>
<body>FAIL